Kiss: Keep it stupid simple

The KISS definition in wikipedia is: “an acronym for “keep it simple stupid” or “keep it stupid simple”, is a design principle noted by the U.S. Navy in 1960. The KISS principle states that most systems work best if they are kept simple rather than made complicated; therefore, simplicity should be a key goal in design, and unnecessary complexity should be avoided”. This article summrizes its meaning in functional programming.